And for the average scissors I use, it won't cut properly in either hand. Interestingly haircut scissors are better at cutting paper than regular paper scissors! I tried disassembling a pair of haircut scissors, and found the screw is interestingly rotationally locked to the blade next to the nut (rather than screw head), and the nut has a spring-loaded locking mechanism (a planar version of mouse wheel notches) so it doesn't rotate unless you turn the nut with a large amount of torque.